Physics for Kids: Easy Experiments, Real Science, and Brilliant Women Who Changed the World
From light that can be slowed to the speed of a bicycle, to the invisible forces that keep rollercoasters on their tracks and planets in their orbits, physics explains how everything in the universe actually works.
Physics is one of the most powerful ways to help a child fall in love with science, because it starts with questions she’s already asking. Why does a ball fall? How does sound travel? What is electricity? Where does heat go?
Before you dive into the experiments and the women who made physics history, here are five facts to get you started.
Five physics facts that make you stop and think
Light could circle the Earth seven times in one second
It travels at 186,000 miles per second. The warmth you feel in the garden is from light that left the Sun eight minutes ago.
In space, nobody can hear you scream
Sound needs something to travel through. Space is a near-perfect vacuum — completely, unbreakably silent across billions of miles.
Your body is running on electricity right now
Every thought, every movement, every dream — powered by tiny electrical signals firing through your nervous system. You are a walking circuit board.
Drop two objects of different weights — they land at the same time
Gravity pulls everything toward Earth at the same rate regardless of mass. Galileo proved this in the 1600s, challenging 2,000 years of accepted wisdom.
If you leave the fridge door open, the room gets warmer
A fridge doesn’t create cold — it moves heat. Leave the door open and the motor pumps even more heat into the room than it removes.
What you’ll find on this page
- Physics experiments for kids you can do at home
- Female scientists for kids whose discoveries changed science
- Simple explanations that make big ideas easier to understand
- A clear next step if she wants more physics after the experiments
Physics experiments for kids
Hands-on science is where so many children suddenly get it. Instead of memorising a fact, they see it happen. They test it. They talk about it. They remember it.
These physics experiments are designed to be simple enough to do at home, but still full of real science. Each one helps your child connect a big physics idea to something she can actually observe for herself.
Inertia Experiment
Discover Newton’s First Law in action — and learn why objects in motion really do want to keep moving.
Try it →
Prove Newton’s Laws
Three kitchen experiments that bring all three of Newton’s Laws to life — one spinning egg, one elastic launcher, one balloon rocket.
Try it →
5 Science Tricks with a Glass
These look like magic but they are pure physics — light, pressure, and surface tension doing extraordinary things.
Let’s go →
Make Your Own Camera Obscura
Turn a shoebox into a working pinhole camera and discover how light travels in straight lines.
Read the post →Women in physics your daughter should know
One of the best ways to help a girl feel that science belongs to her is to show her women who have already changed it. Not as a token extra. Not as a sidebar. As part of the real story of science.
These women didn’t just “inspire others.” They made discoveries that changed how we understand the universe.
Why physics matters for kids
Physics helps children understand how the world actually works — not just that things happen, but why. Why things fall, how energy moves, what electricity really is, and why the sky is blue.
It also underpins almost every field of modern science and engineering. The fundamentals your daughter learns now are the same foundations that power quantum computing, renewable energy, medical imaging, and space exploration.
That makes physics one of the most practical, powerful, and future-facing subjects a child can learn.
Ready to go deeper?
The Hey Smart Girl Book of Physics brings together forces, motion, light, sound, electricity, heat, 30+ hands-on experiments, and the women who changed how we understand our universe — written for curious girls aged 8–12.
Explore the Physics BookPhysics for kids: quick answers
What is physics for kids?
Physics for kids is the study of how the universe works — including forces, motion, energy, light, sound, electricity, heat, and magnetism. It explains why things move, fall, heat up, make sound, and carry electrical charge.
What are some easy physics experiments for kids?
Some of the best easy physics experiments for kids include the inertia experiment, Newton’s Laws kitchen experiments, science tricks with a glass, and making a camera obscura from a shoebox. All can be done at home with everyday materials.
Why should kids learn about women in physics?
Learning about women in physics helps children see that science belongs to everyone. It gives girls strong role models and shows them that the real history of physics has always included brilliant women — even when those women weren’t always given the credit they deserved.